Week numbers 2026
2026 has 53 ISO weeks. Week 1 starts on December 29, 2025 and the last week ends on January 3, 2027.
All weeks of 2026
2026: 53 weeks
| Week | Dates |
|---|---|
| W1 | Dec 29, 2025 – Jan 4, 2026 |
| W2 | Jan 5 – Jan 11, 2026 |
| W3 | Jan 12 – Jan 18, 2026 |
| W4 | Jan 19 – Jan 25, 2026 |
| W5 | Jan 26 – Feb 1, 2026 |
| W6 | Feb 2 – Feb 8, 2026 |
| W7 | Feb 9 – Feb 15, 2026 |
| W8 | Feb 16 – Feb 22, 2026 |
| W9 | Feb 23 – Mar 1, 2026 |
| W10 | Mar 2 – Mar 8, 2026 |
| W11 | Mar 9 – Mar 15, 2026 |
| W12 | Mar 16 – Mar 22, 2026 |
| W13 | Mar 23 – Mar 29, 2026 |
| W14 | Mar 30 – Apr 5, 2026 |
| W15 | Apr 6 – Apr 12, 2026 |
| W16 | Apr 13 – Apr 19, 2026 |
| W17 | Apr 20 – Apr 26, 2026 |
| W18 | Apr 27 – May 3, 2026 |
| W19 | May 4 – May 10, 2026 |
| W20 | May 11 – May 17, 2026 |
| W21 | May 18 – May 24, 2026 |
| W22 | May 25 – May 31, 2026 |
| W23 | Jun 1 – Jun 7, 2026 |
| W24 | Jun 8 – Jun 14, 2026 |
| W25 | Jun 15 – Jun 21, 2026 |
| W26 | Jun 22 – Jun 28, 2026 |
| W27 | Jun 29 – Jul 5, 2026 |
| W28 | Jul 6 – Jul 12, 2026 |
| W29 | Jul 13 – Jul 19, 2026 |
| W30 | Jul 20 – Jul 26, 2026 |
| W31 | Jul 27 – Aug 2, 2026 |
| W32 | Aug 3 – Aug 9, 2026 |
| W33 | Aug 10 – Aug 16, 2026 |
| W34 | Aug 17 – Aug 23, 2026 |
| W35 | Aug 24 – Aug 30, 2026 |
| W36 | Aug 31 – Sep 6, 2026 |
| W37 | Sep 7 – Sep 13, 2026 |
| W38 | Sep 14 – Sep 20, 2026 |
| W39 | Sep 21 – Sep 27, 2026 |
| W40 | Sep 28 – Oct 4, 2026 |
| W41 | Oct 5 – Oct 11, 2026 |
| W42 | Oct 12 – Oct 18, 2026 |
| W43 | Oct 19 – Oct 25, 2026 |
| W44 | Oct 26 – Nov 1, 2026 |
| W45 | Nov 2 – Nov 8, 2026 |
| W46 | Nov 9 – Nov 15, 2026 |
| W47 | Nov 16 – Nov 22, 2026 |
| W48 | Nov 23 – Nov 29, 2026 |
| W49 | Nov 30 – Dec 6, 2026 |
| W50 | Dec 7 – Dec 13, 2026 |
| W51 | Dec 14 – Dec 20, 2026 |
| W52 | Dec 21 – Dec 27, 2026 |
| W53 | Dec 28, 2026 – Jan 3, 2027 |